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Author: Imanudin Ahmad

I am part of the team at PT Excellent Infotama Kreasindo
March 27, 2025 Linux

Blocking Access Based on GeoIP on RHEL 8, Rocky 8, Oracle Linux 8, and CentOS 8

In this guide, I am using Rocky Linux 8 with kernel 4.18 and xtables-addons 3.27. As an example, this applies

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March 26, 2025 ZeXtras

How to Install Carbonio CE on Oracle Linux 8 Easily

In this guide, I am using Oracle Linux 8. However, you can adapt it for Rocky Linux 8 or AlmaLinux

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February 20, 2024 ZeXtras

How to Access Zextras Carbonio Community Edition (CE) from Email Client

This article will explain step by step how to access your Zextras Carbonio CE from an email client. In this

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February 2, 2024 ZeXtras

Zextras Carbonio Community Edition (CE) : How to Install a Commercial SSL Certificate

To ensure trusted access to the Zextras Carbonio Community Edition server from various applications such as browsers, mobile apps, and

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December 2, 2023 Zimbra

How to Integrate Onlyoffice with Zimbra

When I installed Zimbra 10 NE, I forgot to add the onlyoffice repository. So, I can’t open or preview the

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October 10, 2023 Zimbra

Zimbra Tips: How to Restrict User Access to Webmail

In Zimbra 10, you can restrict users from accessing webmail. To do this, you can simply disable the Zimbra web

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October 7, 2023 Zimbra

Exchange ActiveSync for Zimbra Open Source Edition (Nginx Custom)

This article was inspired by Stefan Seidel’s writing here: https://www.stefanseidel.info/Z-Push_on_Zimbra_8 . On previous article about Exchange ActiveSync for Zimbra Open

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October 6, 2023 Zimbra

How to Install Zimbra 10 Open Source Edition on Rocky Linux

In this article, I used Zimbra 10 OSE created by ianw1974. System information IP Address : 192.168.56.11 Domain : imanudin.web.id

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September 23, 2023 Zimbra

Two-Factor Authentication for Zimbra Open Source Edition

Thanks to BTACTIC, an open source & cloud solution that has created a great add-on MALDUA’S Zimbra OSE 2FA Extension

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August 15, 2023 Zimbra

How to Add Content-Security-Policy (CSP) Headers in Zimbra

A few days ago, one of our clients requested to enable Content-Security-Policy (CSP) on their email server. So, this is

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August 8, 2023 Linux / Zimbra

How to Compile OpenSSL to Support Weak Ciphers and 3DES

If you used the third method to enable weak ciphers on Zimbra in the previous article, this is my approach

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August 5, 2023 Zimbra

The Email Clients Experience Issues After Zimbra Update: Zimbra Daffodil 10.0.2, 9.0.0 Patch-34 & 8.8.15 Patch-41

After patching Zimbra Daffodil to version 10.0.2, 9.0.0 Patch-34 & 8.8.15 Patch-41, some email clients like Outlook experienced access issues.

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July 7, 2023 Proxmox

Enhancing Email Security: How to Enforce SPF Check on Proxmox Mail Gateway

Proxmox Mail Gateway (PMG) is a powerful email security solution that provides various features to protect your mail server. One

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June 26, 2023 ZeXtras

How to Install Zextras Carbonio Community Edition (CE)

Zextras Carbonio Community Edition (CE) is one of the solutions for Zimbra Open Source Edition users. Considering that Zimbra Open

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